Home / 678,733.56-1,018,054.71-378,538.65

Finding the Fourth Proportional to 678,733.56, 1,018,054.71 and 378,538.65

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Solution

The fourth proportional to 678,733.56, 1,018,054.71 and 378,538.65 is: 567,782.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,733.56 : 1,018,054.71 = 378,538.65 : x
  2. Step 2: Convert to fraction form
    678,733.56/1,018,054.71 = 378,538.65/x
  3. Step 3: Cross multiply
    678,733.56x = 1,018,054.71 × 378,538.65
  4. Step 4: Simplify right side
    678,733.56x = 385,373,055,549.54
  5. Step 5: Solve for x
    x = 385,373,055,549.54/678,733.56
  6. Step 6: Final answer
    x = 567,782.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.